Sumathy Valav is a 2022 Indian Malayalam-language dark fantasy film based on the mystery road in Trivandrum . The film was directed by Bernard Joseph . The story concerns ghosts, spirits, and black magic. The film stars Vishnu Narayanan , Gautham K Biju , Vishal , Christy , Sreeraj and Jack . The film was inspired by some true invents of a mysterious road in Trivandrum , Kerala . The DOP of the film is Ajay Raju . The music and background score of the film is done by Abin Ponnachan and the sound design is done by Vidhu Nandan .